Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum

Dr. Matthew Feldhammer, PHD

Clinical Laboratory Director (Non-physician) in Jacksonville, FL · enumerated 2021.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1477143733

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Registry record

Entity type Individual (Type 1)

Name Dr. Matthew Feldhammer

Credential PHD

Sex Male

Practice address 655 W 8th St, Jacksonville, FL, 32209

Phone (904) 244-5076

Enumeration date Jan 21, 2021

Last updated in NPPES Jan 21, 2021

Taxonomy & licenses

246QC1000X Chemistry Pathology Specialist/Technologist Technologists, Technicians & Other Technical Service Providers · License 1225 (DE) Secondary

246QI0000X Immunology Pathology Specialist/Technologist Technologists, Technicians & Other Technical Service Providers Secondary

246QL0901X Diplomate Laboratory Management Specialist/Technologist Technologists, Technicians & Other Technical Service Providers Secondary

246ZB0500X Biochemist Technologists, Technicians & Other Technical Service Providers Secondary

247ZC0005X Clinical Laboratory Director (Non-physician) Technologists, Technicians & Other Technical Service Providers · License DL49402 (FL) Primary

PHD · Doctor of Philosophy: A doctoral degree; in healthcare often held by clinical psychologists and researchers. About the PHD credential

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

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Frequently asked questions

Is NPI 1477143733 active?

Yes, as of the latest NPPES snapshot, NPI 1477143733 is active (record last updated 2021-01-21).

How do I verify Matthew Feldhammer's NPI record?

Cross-check NPI 1477143733 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2021-01-21.